Ko-Ken
Ko-Ken Professional Tools: Premium Industrial Hand Tools
Professional-Grade Ko-Ken Tools from Your Trusted Michigan-Based Distributor
Discover the Ko-Ken collection at Freer Tool & Supply—your destination for premium Japanese hand tools and sockets renowned for precision, durability, and professional performance. Our selection includes Ko-Ken’s high-quality impact sockets, ratchets, extensions, and specialty tools, all engineered for demanding automotive, industrial, and maintenance applications. Whether you’re a technician, mechanic, or industry professional, Ko-Ken tools deliver the reliability and accuracy you need for every job.
High Performance Tools of Convincing Quality.
Founded in 2012 by Jim Chase, Koken USA began sharing in the tool marketplace about an excellent product line of tools that was new to North America. He was so impressed by their quality and engineering that he claimed, "If we can just get them (Koken sockets) into the hands of the consumer, they will never buy anything else."
First with the introduction of Koken's broad line of standard sockets and tools, followed by their offering of custom sockets to meet specific customer requirements, Koken quickly developed a reputation for quality tools and outstanding customer service in North America.
Available Product Lines:
Professional Hand Tools:
Socket Sets
Impact Sockets
Specialty Tools
Industrial Solutions
Ko-ken 3400M-24 3/8 Sq. Dr. Socket 24mm 6 point Length 34mm
SKU: KK-3400M-24
MPN: 3400M-24
Ko-ken 3400M-25 3/8 Sq. Dr. Socket 25mm 6 point Length 34mm
SKU: KK-3400M-25
MPN: 3400M-25
Ko-ken 3400M-26 3/8 Sq. Dr. Socket 26mm 6 point Length 35mm
SKU: KK-3400M-26
MPN: 3400M-26
Ko-ken 3400M-5 3/8 Sq. Dr. Socket 5mm 6 point Length 26mm
SKU: KK-3400M-5
MPN: 3400M-5
Ko-ken 3400M-5.5 3/8 Sq. Dr. Socket 5.5mm 6 point Length 26mm
SKU: KK-3400M-5.5
MPN: 3400M-5.5
Ko-ken 3400M-6 3/8 Sq. Dr. Socket 6mm 6 point Length 26mm
SKU: KK-3400M-6
MPN: 3400M-6
Ko-ken 3400M-7 3/8 Sq. Dr. Socket 7mm 6 point Length 26mm
SKU: KK-3400M-7
MPN: 3400M-7
Ko-ken 3400M-8 3/8 Sq. Dr. Socket 8mm 6 point Length 26mm
SKU: KK-3400M-8
MPN: 3400M-8
Ko-ken 3400M-9 3/8 Sq. Dr. Socket 9mm 6 point Length 26mm
SKU: KK-3400M-9
MPN: 3400M-9
Ko-ken 3400M.24-27 3/8 Sq. Dr. Socket 27mm 6 point Length 24mm
SKU: KK-3400M.24-27
MPN: 3400M.24-27
Ko-ken 3400M.24-30 3/8 Sq. Dr. Socket 30mm 6 point Length 24mm
SKU: KK-3400M.24-30
MPN: 3400M.24-30
Ko-ken 3400M.24-32 3/8 Sq. Dr. Socket 32mm 6 point Length 24mm
SKU: KK-3400M.24-32
MPN: 3400M.24-32
Ko-ken 3400M.24-36 3/8 Sq. Dr. Socket 36mm 6 point Length 24mm
SKU: KK-3400M.24-36
MPN: 3400M.24-36
Ko-ken 3400MZ-10 3/8 Sq. Dr. Socket 10mm 6 point Length 20mm Z-series
SKU: KK-3400MZ-10
MPN: 3400MZ-10
Ko-ken 3400MZ-11 3/8 Sq. Dr. Socket 11mm 6 point Length 21mm Z-series
SKU: KK-3400MZ-11
MPN: 3400MZ-11
Ko-ken 3400MZ-12 3/8 Sq. Dr. Socket 12mm 6 point Length 21mm Z-series
SKU: KK-3400MZ-12
MPN: 3400MZ-12
Ko-ken 3400MZ-13 3/8 Sq. Dr. Socket 13mm 6 point Length 21mm Z-series
SKU: KK-3400MZ-13
MPN: 3400MZ-13
Ko-ken 3400MZ-14 3/8 Sq. Dr. Socket 14mm 6 point Length 21mm Z-series
SKU: KK-3400MZ-14
MPN: 3400MZ-14
Ko-ken 3400MZ-15 3/8 Sq. Dr. Socket 15mm 6 point Length 21mm Z-series
SKU: KK-3400MZ-15
MPN: 3400MZ-15
Ko-ken 3400MZ-16 3/8 Sq. Dr. Socket 16mm 6 point Length 21mm Z-series
SKU: KK-3400MZ-16
MPN: 3400MZ-16
Ko-ken 3400MZ-17 3/8 Sq. Dr. Socket 17mm 6 point Length 21mm Z-series
SKU: KK-3400MZ-17
MPN: 3400MZ-17
Ko-ken 3400MZ-18 3/8 Sq. Dr. Socket 18mm 6 point Length 22mm Z-series
SKU: KK-3400MZ-18
MPN: 3400MZ-18
Ko-ken 3400MZ-19 3/8 Sq. Dr. Socket 19mm 6 point Length 22mm Z-series
SKU: KK-3400MZ-19
MPN: 3400MZ-19
Ko-ken 3400MZ-21 3/8 Sq. Dr. Socket 21mm 6 point Length 23mm Z-series
SKU: KK-3400MZ-21
MPN: 3400MZ-21